Pampu ya metering imatchedwanso pampu yochulukira kapena pampu yofananira. Pampu ya metering ndi mpope wapadera wosuntha womwe umatha kukwaniritsa zofunikira zaukadaulo wosiyanasiyana, umakhala ndi kuthamanga komwe kumatha kusinthidwa mosalekeza mkati mwa 0-100% ndipo imagwiritsidwa ntchito popereka zakumwa (makamaka zamadzimadzi zowononga)
Pampu ya metering ndi mtundu wamakina otumizira madzi ndipo mawonekedwe ake apamwamba ndikuti amatha kuyenda mosalekeza mosasamala kanthu za kuthamanga kwamadzi. Ndi pampu ya metering, ntchito zotumizira, metering ndi kusintha zimatha kumalizidwa nthawi imodzi ndipo chifukwa chake, kupanga kumatha kukhala kosavuta. Ndi mapampu angapo a metering, mitundu ingapo ya media imatha kulowetsedwa munjira yaukadaulo molingana ndi kusakanikirana.
